There should always be uniforms for different purposes - the DS9 jumpsuits looked like something to work in, while the TNG uniforms from season 3 onward looked like office wear.

Though fabrics of the future could be more flexible, water- and stain-repellent, and even thermal regulating (suit temperature regulation was mentioned in "Spock's Brain", indicating that those supposedly thin shirts and pants they wore could be warmed up, somehow), all of which could mean there wouldn't have to be the same varieties of uniforms that we have now.